18147920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1409}}^1$

素因数の和:1452

約数の個数: 80

約数和(自身を含む): 50353920

約数和(自身を除く): 32206000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 161, 184, 230, 280, 322, 368, 460, 560, 644, 805, 920, 1288, 1409, 1610, 1840, 2576, 2818, 3220, 5636, 6440, 7045, 9863, 11272, 12880, 14090, 19726, 22544, 28180, 32407, 39452, 49315, 56360, 64814, 78904, 98630, 112720, 129628, 157808, 162035, 197260, 226849, 259256, 324070, 394520, 453698, 518512, 648140, 789040, 907396, 1134245, 1296280, 1814792, 2268490, 2592560, 3629584, 4536980, 9073960, 18147920]

約数ペア:

[(1, 18147920), (2, 9073960), (4, 4536980), (5, 3629584), (7, 2592560), (8, 2268490), (10, 1814792), (14, 1296280), (16, 1134245), (20, 907396), (23, 789040), (28, 648140), (35, 518512), (40, 453698), (46, 394520), (56, 324070), (70, 259256), (80, 226849), (92, 197260), (112, 162035), (115, 157808), (140, 129628), (161, 112720), (184, 98630), (230, 78904), (280, 64814), (322, 56360), (368, 49315), (460, 39452), (560, 32407), (644, 28180), (805, 22544), (920, 19726), (1288, 14090), (1409, 12880), (1610, 11272), (1840, 9863), (2576, 7045), (2818, 6440), (3220, 5636)]